The warning is produced on `cssnano` call. See below:
> Without `from` option PostCSS could generate wrong source map and will not find Browserslist config. Set it to CSS file path or to `undefined` to prevent this warning.
Reproduction:
```shell
mkdir work
cd work
npx docusaurus-init
cd website
yarn install
yarn run build
```
Environments:
- Node: 12.6.0
- Yarn: 1.17.3
* Add `unlisted` header option for blog posts, fixes#1393.
Previously, the blog sidebar listed the most recent blog posts sorted by
their publish date. This commit adds the ability to hide a specific blog
post from the sidebar and the feed of all blog posts by adding the
`unlisted: true` header option.
```md
title: My Draft Post
unlisted: true # Hide from blog sidebar and main blog page feed.
---
```
* Rename "unlisted" into "draft".
* fix: enable live reloading title of doc
* fix: removing unnecessary reload statements
* fix: only title change should trigger a live reload
* fix: adding more properties that triggers a live reload
* fix: refactoring
* feat(core): use 0.0.0.0 for livereload address
* test(core): update server tests
* feat(cli): add host by command line flag
* test: revert test changes
* fix(core): update server to use custom host if supplied
* refactor: nits
* chore: move to monorepo
* lint all js file
* simplify circleCI
* fix failing tests
* fix tests due to folder rename
* fix test since v1 website is renamed
